Test Record of Flight Tests Using Alcohol-to-Jet/JP-8 Blended Fuel

2015 ◽  
Author(s):  
Franklin D. Cox ◽  
George A. Bobula
Keyword(s):  
Flight Tests ◽  
Test Record ◽  
Blended Fuel

Record Wear Studies by Scanning Electron Microscopy

1968 ◽  
Vol 26 ◽  
pp. 364-365
Author(s):  
M.D. Coutts ◽  
E.R. Levin ◽  
J.G. Woodward
Keyword(s):  
Electron Microscopy ◽  
Constant Velocity ◽  
Peak Velocity ◽  
Great Depth ◽  
Depth Of Focus ◽  
Sweep Frequency ◽  
Transmission Electron ◽  
Test Record ◽  
Lateral Mode ◽  
Scanning Electron

While record grooves have been studied by transmission electron microscopy with replica techniques, and by optical microscopy, the former are cumbersome and restricted and the latter limited by lack of depth of focus and resolution at higher magnification. With its great depth of focus and ease in specimen manipulation, the scanning electron microscope is admirably suited for record wear studies.A special RCA sweep frequency test record was used with both lateral and vertical modulation bands. The signal is a repetitive, constant-velocity sweep from 2 to 20 kHz having a duration and repetitive rate of approximately 0.1 sec. and a peak velocity of 5.5 cm/s.A series of different pickups and numbers of plays were used on vinyl records. One centimeter discs were then cut out, mounted and coated with 200 Å of gold to prevent charging during examination. Wear studies were made by taking micrographs of record grooves having 1, 10 and 50 plays with each stylus and comparing with typical “no-play” grooves. Fig. 1 shows unplayed grooves in a vinyl pressing with sweep-frequency modulation in the lateral mode.

Conduction of Mission Task Elements within Simulator Flight Tests for Handling Quality Evaluation of an eVTOL Aircraft

2021 ◽  
Author(s):  
Guillermo Díaz García ◽  
David Seiferth ◽  
Vitus Meidinger ◽  
Daniel Dollinger ◽  
Pranav Nagarajan ◽  
...  
Keyword(s):  
Quality Evaluation ◽  
Flight Tests ◽  
Handling Quality

On-board converter of signals of inductive sensors of speed IS-1165M1 with increased noise immunity

2017 ◽  
Vol 13 (3) ◽  
pp. 30-38
Author(s):  
Y. B. Gorbatkin ◽  
V. A. Chernyshev ◽  
S. S. Sevostyanov ◽  
A. V. Gladkov
Keyword(s):  
Noise Immunity ◽  
Dynamic Range ◽  
Rocket Engines ◽  
Flight Tests ◽  
Speed Sensor ◽  
Inductive Sensors ◽  
Turbo Pump

The article is devoted to the development of a secondary converter for measuring the speed of turbo-pump aggregates of rocket engines. The principle of the induction speed sensor is considered in the article. A method is proposed for generating output pulses from signals of induction speed sensors, which consists in the preliminary integration of the signals of the speed sensor. This method allows to increase the reliability and accuracy of the formation of signals of induction speed sensors, as well as to increase the noise immunity of the secondary converter and significantly increase the dynamic range of measuring the speed. The data of flight tests of the developed secondary converter are given.

Simultaneous wastewater treatment and generation of blended fuel methane and hydrogen using Au-Pt/TiO2 photo-reforming catalytic material

Fuel ◽  
2021 ◽  
Vol 291 ◽  
pp. 120113
Author(s):  
Girivyankatesh Hippargi ◽  
Swapna Anjankar ◽  
Reddithota J. Krupadam ◽  
Sadhana S. Rayalu
Keyword(s):  
Wastewater Treatment ◽  
Catalytic Material ◽  
Blended Fuel
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